In which one among the following situations, the bulb would glow the most? (Consider all batteries are the same)

  1. A. Circuit (a)
  2. B. Circuit (b)
  3. C. Circuit (c)
  4. D. Circuit (d)

Correct Answer: A. Circuit (a)

Explanation

The bulb glows the brightest in a circuit where the batteries are connected in series, providing the maximum equivalent voltage to drive the highest current through the bulb.

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